The NRR will enroll patients and collect clinically recorded longitudinal data for as long as they are followed by the Neurosurgery service and up to an additional 5 years after being released from care. Patients will be enrolled on admission to the service and samples will be taken at three time points: Time One, within 24 hours of event (preferably first blood draw); Time Two, within 48 hours of event; and Time Three, time of any residual tissue availability. Family members of select groups of patients will also be approached for enrollment.